Final answer:
Monkeys raised in social isolation displayed long-term social deficiencies, struggled to integrate with peers, and often remained social misfits, highlighting the importance of early social interaction.
Step-by-step explanation:
The Harlows' research with rhesus monkeys led to the conclusion that monkeys that were raised in social isolation suffered long-term effects. Social isolation in monkeys prevented them from experiencing early social contact, which is crucial for normal development.
Without it, when these monkeys were reintroduced to other monkeys, they struggled with social integration and exhibited inappropriate social behaviors, such as difficulty in forming normal social relationships with their peers. Instead of adapting quickly or showing no effects, or fully recovering by forming strong social bonds, the isolated monkeys were significantly challenged.
Most commonly, the monkeys displayed various forms of social deficiencies, such as being reclusive, struggling with peer interactions, and in many cases, failing to exhibit normal mating behaviors. It turns out that these monkeys often remained social misfits to some degree, indicating that the need for early social interaction is vital for normal social development in primates.